Telegraphy.



P. B. DELANY.

TELEGRAPHY APPLICTI-0N FILED NOV. 28| 14916. n

P@tnte Nov. 27, 19M

2 SHEETS-SHEET L 23h/venin@ P. B. DELANYl TELEGRAPHY.

APPLICATION FILED NOV. 28,19l6. t @@'rlfk Patented Nov. 27, 1917.

2 SHEETS-SHEET 2.

'or receiver for such signals adaptable for PATRICK IB. DELANY, 0F SOUTHORANGE, NEW JERSEY.

TELEGRAPHY.

Application med November 2s, 191e.

To all whom t may concern.'

Be it known that I, PATRICK B. DELANY, a citizen of the United States,residing at South Orange, in the county of Essex and State of NewJersey, have invented certain new and useful Improvements in Telegraphy,of which the following is a specification. his invention relates broadlyto the art of transmitting and receiving telegraphic signals, and moreparticularly to a sounder' use with either the ordinary Morse telegraphsystems, or with wireless systems.

he principal object of the present invention is to provide a sounder orreceiver which may be used to register transmitted signal units in theform in which they are transmitted, or to register each individualtransmitted signal unit by vibrations sustained throughout the periodallotted to each such unit.

A further object ot' my invention is to provide a sounder of the naturereferred to which shall have the means controlling the production of thesustained vibrations so constructed that it may be applied as anattachment to Sounders of the kind ordinarily used. l Y

A still further object of this invention is to provide a main linereceiver and a local receiver or sounder at the receiving station whichare so connected that the operation of' one may be controlled by theoperation of the other, in such manner as to produce sustainedvibrations in one of the receiving elements.

Another object ot' the invention is to provide switches in the receivingcircuit by means of which the local receiver or sounder may be soconnected in circuit as to operate either in the usual manner, or in theimproved inanner above referred to.

In the accompanying drawings:

Figure l is a perspective view of one form ot' my improved sounder orreceiver. 'p

F ig. 2 is a side view of my sounder showing diagrammatically thecircuit connections therefor.

Fig. 3 is a diagjammatic view of the preferred electrical. connections.

Fig. et is a diagrammatic view partly in detail and partly in sectionshowing a modiiied receiving circuit.

Fig. 5 is a diagrammatic view of a receiving circuit in which thesounder armature controls in part its own vibration.

Specification of Letters Patent.

Patented Nov.. 27,1917..

SerialNo. 133,852.

Fig. 6 is a diagrammatic view of a receiving circuit in which the relayor main line receiver armature controls the operation of the sounder orlocal receiver armature to produce either sustained vibration thereof,or operation, in substantial synchronism with the sending key.

F ig. 'r'V is a diagrammatic view of a receiving circuit in which theoperation of the relay and sounder may both be controlled use forreceiving or wireless teleit is customary to employ a an armature whichis drawn down against its anvil upon the closing'of the sending circuit,and which is released and drawn upwardly by a spring or the likeupon thebreaking of such circ-uit. As is well known, the majority of Morseoperators are accustomed to receiving from thev ordinary sounder whichgives but a single stroke foradoter dash, the only difference being inthe greater lapse of time between the down stroke and the up stroke inthe case of the dash, and therefore they cannot ordinarily read wirelesssignals inA which method each dot or dash is a sustained note or buzzfrom beginning to end. The converse is also true, and a majority ofwireless operators unaccustomed to the single stroke Morse signals areunable to read them. Ufith the improved* sounderV herein shown, theMorse operator may receive messages intended for him by simply closing aswitch which may be provided for use in connection with the sounder, andthereby short circuit the mechanism which causes automatic vibrationofthe sounder armature, and receive the message in the ordinary way.During spare moments he may, for practice, listen to the other messagespassing over the line by opening the switch and thereby changing themovement of the lever from positive single strokes to automaticvibratory movements, which give the" sustained note or'buzz for eachtransmitted signal unit,such as a dot or dash. The character of'thisnote may he changed at will by adjustment of the contacts in theinterrupt-ingsounder circuit, so thatk the .vibrations willapproximately".l cor showing` arespond to any of the various rates ofvibration produced in the wireless telephone receiver. As the amplitudeof movement of the armature lever for Morse signals must, 5 for sake ofloudness, be many times greater than the movement necessary to producethe note or'buzz corresponding to wireless signals, provision is made inthis inventionfor accomplishing both methods without changing theadjustment of the limiting stops of the armature lever of the sounder,the movement or play of which is primarily regulated for the ordinaryamplitude of the Morse Sounders, so that in Morse translation the sounddoes not differ from ordinary standard Morse Sounders. For Wirelesssignals, the interruptingcontact may be so regulated that the circuit ofthe sounder magnet is broken by the slightest movement possible of thearmature lever from its upper stop, thereby causing automatic vibrationwithin the smallest possible limits of movement and producing a veryhigh pitched note, or by changing the adjustment of the interruptingcontacts so as to permit of greater movement of the armature leven awayfrom its upper stop before the circuit is broken, the movement of thearmature lever vwill be through a greater amplitude and at a lesserrate, thereby producing a lower pitched note. It will be obvious that,by making suitable changes in the adjustment of the interruptingcontact, the armature may be caused to vibrate either against the upperstop or against the lower one. The latter arrangement for purposes ofpractice would, at the beginning, be more helpful to the operator intranscription of wireless signals, as the initial blow of the leverwould be given in the case of a dot or dash before the dash becomes asustained note'for the remainder of its apportioned time.

This invention may extend in its scope of usefulness to receivingcircuits employing a primary or main line receiver corresponding infunction and operation to the Morse relay in ordinary telegraphcircuits. rIhe primary or main line receiver may be of the telephonetype, as shown for example in Fig. 4, with local contacts controllingthe circuit of the sounder.

Referring more particularly to the drawings, I have shown a sounder 1similar in many respects to the sounders ordinarily employed. rlhissounder preferably comprises a pair of'suitable electro-magnets 2Yoperating upon the armature L1 to draw the same downwardly against theanvil 5 when the circuit therethrough is closed by the of movement ofthe armature, I preferably provide the usual adjustable upper stop 6 andthelower stop 7. The armature may be supported in any desired manner, asfor examrleby mee-,11S @tithe arch .support .81

` thumb nut 11.

V,provision of a spring main line relay. For controlling the limits ihaving adjustable sensitive bearings 9. For maintaining the armaturenormally against its upper stop, the support may be provided with atension spring 10, the tension of which may be controlled at will Vbythe My improvements in this connection reside more particularly in themember' 15 secured to and projecting fromthe rear of the armature f1,and carrying a contact 16 suitably connected thereto.V I also preferablyprovide a hook or lifter 17V which limits the downward movement of thecontact 16 and also acts to lift the same upon operation of thearmature. Any suitable means may be providedfor making contact with thespring 15, as any usual form of binding post 1S. The contact 16 in itslower position rests, against the adjustable Contact point 19 carried bya standard at the rear of the instrument and operable through the mediumof the wheel 20. The sounder is also provided with suitable connectorsA, B and C to which the circuits for the sounder are attached and whichare adapted to receive the terminals from the main line relay. There isalso used in connection with this sounder a suitable switch 24 adapted,upon its operation, to short circuit the automatic circuit breakingcontact 16. j

By reference to Fig. 3, it will be, seen that with the switch 24 inpopenposition and the main line relay R in closed position, as indicated indotted lines, the circuitV for the sounder will be from the battery tothe con- 100 nector A and thence through a wire 21 to the contact point19, the contactI 16, the spring arm 15 to the binding vpost 18 andthence through the electromagnet 2 back to, the-connector C through awire 22 and com- 105 pleting the circuit to the otherv side of thebattery through the relay armature. It will be apparent that the circuitbreaking contact 16 is in series at this time with the electromagnetcircuit, so that as soon as the 110 armature is attracted lthe circuitwill be broken by reason of the lifting of the contact 16, and thearmature will be returned to its original .normal position through theoperation ofl the tension or compression 115 spring. This operation willbe rapidly repeated as long as the relay R is in closedposition,'thereby .producing a sustained note or buzz similarl to theordinary wireless signal. When it is desired to use the sounder for 120registering4 .ordinary Morse signals, the switch 24 is moved to itsclosed dotted line position. V`With the relay in closed position, andt-he'switch in the position just described, the circuit will befrom thebattery through 125 the wire 27, the switch 24, and the wire 26 to theelectromagnet 2, and thence by the return wire 22 to the connector C andthe battervthe circuit breaking mechanism bethe armaturev produces asingleA stroke for each signal transmitted.

It will thus be seen that I have provided an instrument which may bereadily converted at will from one type of receiver into another merelyby the operation of a suit a-ble switch member, thereby adapting theinstrument for use by operators accustomed to the reading of diiferenttypes of instruments.

In using this invention in connection with a primary receiver R of thetelephone type, as shown more particularly in Fig. 4, I preferablypro-vide a contact member 28 adjustable in relation to the receiverdiaphragm by means of the thumb nut 29, the entire member beingsupportedin a suitable bearing or bracket 30 carried by the receiver casing. Thisreceiver, which may be designated as the primary or main line receiver,performs a function similar to and corresponding with the functionperformed by the ordinary Morse, relay, and closes the local circuit ofthe sounder S through the contact 28, the bearing 30, the connector 3l,and wire 32 to the sounder armature 34, and thence through the sounderto the wire 35, battery B and wire 36 to the connector 37' secured tothe diaphragm of the receiver. Upon the receipt of a telegraphic signalunit the main line receiver diaphragm will move outwardly therebycompleting the circuit above referred to. This will cause the armatureof the sounder to be drawn inwardly which will in turn break thecircuit, allowing the return of the armature. In this system also use ismade of a vibratory action in the sounder armature for receiving themessage.

It is not necessary for the main line receiver to make and break thelocal circuit of the sounder S at every vibration of the armature solong as the diaphragm responds to the open and closed positions of theoperators sending key, without registration of the successive trainofimpulses which go to make up a signal unit. This operation will permitof a much more reliable adjustment between the diaphragm and the contact28 than could be obtained if it were necessary to register allV thevibrationsof the diaphragm, and as the minimum movement of the armaturelever o-f sounder S in its automatic vibration renders it very much moresensitive than if a. single movement sufficient for aud-ibility werenecessary, a very sensitive system is provided. Furthermore, the breaksin the circuit at the point of contact of the armature 34 with contact Cof the sounder telephone S relieve the diaphragm of the main line relayfrom the sticking or welding eiiect due to arcing upon the breaking ofthe local circuit.

Referring more particularly to the circuit shown diagrammatically inFig. 5, upon the passage of current through the relay R2 due to theclosed position of the senders key, the armature 38 will be attracted,against the action of its retaining spring, into electrical contact withthe point 39 thereby closing the local circuit of the sounder S2. Thesounder may be provided with a. shunt circuit 40 including a manuallyoperable switch 4l so that the operation of the armature 44 of thesounder against the contact 4t2 will automatically short circuit thesounder circuit and according to its adjustment permit the armature. toseek its normal position under the influence of its operating spring.With the switch ll in closed position, the local sounder or receiverwill operate to produce sustained vibrations throughout t-he period oftime allowed to each signal unit. With the switch in open position thesounder will operate in its usual manner.

F ig. 6 shows a circuit very similar to the circuitI just described,with the exception of the position of the shunt circuit 40. It is hereshown as adapted to be closed by the operation of the armature 38 of therelay R2 in such manner as to short circuit the relay, which will inturn cause the local circuit to be rapidly opened and closed, providedthe switch 45 is in closed or dotted line position.

In Fig. 7, the relay armature 3S when attracted by the relay R2 closesthe local cir cuit of thesounder S2 in the usual manner, thereby causingits armature let to be attracted against the contact 42. IVith theswitch 46 in closed position as indicated in dotted lines, the operationof the sounder armat-ure will automatically short circuit the relaythrough the shunt circuit 402, thereby causing sustained vibrations tobe registered by both of the instruments.

Fig. 8 illustrates diagrammatically a series of circuits controlling theoperation of the relay sounder, which circuits embody the features ofthe individual circuits illustrated in Figs. 5, 6 and 7. Due to thearrangement of shunt circuits and switches as herein illustrated, it ispossible to operate the system in such a manner that the sounderarmature operates to short circuit itself as described in connectionwith Fig. 5; or the relay armature may operate to short circuit its owncircuit, as fully set forth with reference to Fig. 6; or so that thesounder armature may operate to shunt the relay. Any of these conditionsof operation may be brought about by closing the respective switchcontrolling the desired shunt circuit.

ith any one of the switches in closed position it will be apparent thatsustained vibrations are given by the local receiver during the periodof time allotted to each signal unit, while with the switches all inopen positions the sounder operates in a manner equivalent to that ofthe ordinary Morse or telegraph sounder. With the instruments connectedas here shown, I provide a resistance i7 to prevent short circuiting thelocal battery when the switch is closed.

In Fig. 9 I have illustrated a circuit in which the sounder armature ilin its normal position constitutes part of the line circuit of therelay, the armature being connectedin series therewith through the wire48 and the ground wire LIQ. Then the main line relay circuit is closed,the attraction of its armature 3S will close the local circuit of thesounder through the contact 39. The sounder armature will in turn beattracted away from the cont-act 50, thereby breaking the relay circuit.This operation will be rapidly repeated causing the sounder armature tovibrate.

Various changes may be made in the construction of the sounder hereinshown, or in the arrangement ,of the various circuits without departingfrom the broader features of the invent-ion claimed.

What is claimed is:

l. A telegraph apparatus including a relay, adapted to receivetransmitted messages, a sounder controlled by said relay and adapted toproduce audible signals, and

means for causing the audible signal given by said sounder to eithercorrespond in character with, or differentiate in character from, thatreceived by the relay.

2. A telegraph apparatus comprising a relay adapted to receivetransmitted signal units, in broken or unbroken form, a. soundercontrolled by said relay, and means for causing said sounder to givesaid signal units either in broken or unbroken form irrespective of themanner of receiving the same by said relay.

3. In a telegraphic apparatus, a receiver for giving transmitted signalunits in unbroken form, and means controlled by said receiver forcausing the same to give sustained'vibrations for each signal unit.

4:. A telegraph apparatus comprising a main line receiver adapted toreceive unbroken transmitted signal units, a local receiver comprising atelegraph sounder, and means for converting said unbroken signal unitsinto rapidly interrupted signals at said sounder.

5. A telegraph apparatus comprising aA main line receiver, a localreceiver, means for controlling either of said receivers by fthe other,and means for changing the character of signal given by either of saidreceivers.

6. In a telegraph apparatus, a telegraphv VCopies of this patent may Deobtained for five cents each, by addressing the Washington, D. C.

sounder having an anvil, and means for causing said sounder to operateagainst the anvil to give distinctly diiferent types of signals.V

7 In a telegraph apparatus, a telegraph sounder adapted to receivetransmitted signal units, an anvil, and means for causing said sounderto operate against the anvil to give distinct types of signalsirrespective of the type of signal received.

8. In a telegraph apparatus, a telegraph sounder adapted to receivetransmitted signal units, means for causing said sounder to said localreceiver to either correspond with or differ in character from thatreceived by the main line receiver. Y

l1. A sounder for telegraphic signals, comprising an armature, an anvilVagainst which said armature may be operated, and a circuit breaker formodifying the operation of said armature against the anvil.

12. A sounder for telegraphic signals, comprising an armature, an anvilagainst which said armature may be operated, and a circuit breakercarried by said armature for modifying the operation of said armatureagainst the anvil.

13. In a telegraph apparatus, a main line receiver, a local recordercontrolled by said main-line receiver to record unbroken telegraphicsignals, means controlled by said local recorderY for automaticallyconverting said unbroken signals into vibratory signals, anda switchcontrolling the operation Vof said automatic means.

Vlet. A` sounder forA -telegraphic signals, comprising' an armature, ananvil against which oneY end of saidarmature may be operated, and acircuit breaker mounted on the opposite end of said armature formodifying the operation thereof against the anvil.

In testimony whereof, I have hereunto subscribed myzname. 1

'PATRICK B.'DELANY.

Commissioner of Patents,

